Case study:Environmental Restoration of the Lower Section of the Bembézar River and its River Environment (Phase 1)

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Location: 37° 47' 26.31" N, 5° 13' 15.98" W

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Project overview

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Status	In progress
Project web site	http://www.chguadalquivir.es/inicio
Themes	Habitat and biodiversity, Land use management - forestry, Monitoring, Social benefits
Country	Spain
Main contact forename	Maria Jesus
Main contact surname	Castañeda
Main contact user ID
Contact organisation	Guadalquivir Hydrographic Confederation. Ministry for Ecological Transition.
Contact organisation web site	http://www.chguadalquivir.es/inicio
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

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With the aim of reorienting development towards sustainability, the Ministry of Agriculture and Fisheries, Food and the Environment has become aware of the importance of recovering the beds and banks of our rivers, and as a result has designed the National Strategy for Restoration of Rivers, a project that aims to recover river masses. It is a question of giving back to the river what was its own, its space, its vegetation, its water..., so that by itself it is capable of recovering its associated ecosystem. And following the requirements of the Water Framework Directive, approved in December 2000 and obligatory for the Spanish State, the objective is to ensure that rivers and streams recover their "good ecological status", and to make all administrative uses and actions compatible with the conservation of their natural values. The implementation of the National Strategy for the Restoration of Rivers is based on debate and consensus. We have sought the maximum participation of representatives of all entities of society to have the approval of all. The objective of this project is the environmental restoration of the lower stretch of the Bembézar River and its surroundings, which also includes the final stretch of its tributary, the Guadalora stream and the Madre Vieja river corridor (the former arm of the Guadalquivir that joins the Bembézar). The lower section of the Bembézar River is surrounded by extensive irrigated land that uses its waters through the hydraulic infrastructures created in its basin (reservoirs, canals and irrigation systems). It is thus a heavily regulated river, with three reservoirs upstream of this stretch, so that the recovery of it to its natural state is unfeasible. On the other hand, it is affected by important infrastructures that cross its course. The AVE trains tracks limit the lower section to the north and half of the section is crossed by the Seville-Cordoba railway and the Seville-Cordoba road (A-431). The project carries out actions to improve the natural environment through the cleaning of the riverbed and the restoration of autochthonous riverside vegetation; integration actions in a fluvial space, such as the construction of a pedestrian path and a footbridge over the river; and the conditioning of infrastructures for public use through the cleaning of vegetation from the existing Medieval Bridge in the Bembézar riverbed.

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Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district C.H.Guadalquivir River basin Guadalquivir River Subcatchment River name Bembézar River Area category Area (km2) 1.381.38 km² <br />138 ha <br /> Maximum altitude category Maximum altitude (m) Dominant geology Ecoregion Vega del Guadalquivir"Vega del Guadalquivir" is not in the list (Iceland, Tundra, Borealic uplands, Fenno-Scandian Shield, Great Britain, Ireland and Northern Ireland, Ibero-Macaronesian, Taiga, Central Plains, Baltic Province, ...) of allowed values for the "Ecoregion" property. Dominant land cover tree form, agricultural (irrigated) Waterbody ID Site Edit site Name Lower Section of Bembézar River and its Surroundings WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body No National/international site designation Local/regional site designations Protected species present Yes Invasive species present No Species of interest According to the Book of the Threatened Wild Flora of Andalusia, published by the Department of the Environment of the Regional Government of Andalusia (2000), reference is made to the hackberry tree (Celtis australis), catalogued as Vulnerable (Regional Government of Andalusia). According to this same source, the hackberry tree does not meet any of the criteria for which it can be considered an endangered species, but it has ethnobotanical and timber importance. Specially since it is a marginal crop from historical agricultures, having archaeological importance as a bio-indicator of the presence of ancient or current roads, mills or irrigation ditches. Therefore, its wild populations in the region must be conserved, its presence valued in environmental impact projects, and the identification of forest formations and isolated individuals, valuing their function and meaning. Dominant hydrology Dominant substrate River corridor land use Average bankfull channel width category Average bankfull channel width (m) Average bankfull channel depth category Average bankfull channel depth (m) Mean discharge category Mean annual discharge (m3/s) Average channel gradient category Average channel gradient Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) Project started 2019/01/08 Works started 2019/12/16 Works completed Project completed Total cost category 500 - 1000 k€ Total cost (k€) 960.873960.873 k€ <br />960,873 € <br /> Benefit to cost ratio Funding sources Guadalquivir Hydrographic Confederation Cost for project phases Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname Investigation and design Stakeholder engagement and communication Works and works supervision Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Hydromorphology The hilly countryside seams very close to the riverbed causing an increase of river sinuosity as it passes by. Biology Physico-chemical Other reasons for the project social Measures Edit Measures Structural measures Bank/bed modifications Actions to improve the natural environment: Cleaning of the riverbed and the riverbank; Removal of dead vegetation and cleaning of rubbish. Floodplain / River corridor Actions to improve the natural environment: Restoration of the autochthonous riverside vegetation in the sections in which the reedbed is present. It is responsible for the degradation of the autochthonous vegetation, in an area which should be a riverside forest with species closer to the ecological climax; Removal of ailanthus and other invasive exotic species. Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Actions of integration in a river area: Construction of a pedestrian path 2 meters wide and 3, 080 meters long along the riverside forest of the Bembézar River; Construction of a footbridge over the river and improvement of difficult passageways along the path. Improvement of infrastructures for public use: Cleaning of vegetation of the existing Medieval Bridge in the Bembézar riverbed. Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit Physico-chemical quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Any other monitoring, e.g. social, economic Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information